Kenmore 16677 Service Manual - Page 13

TO ADJUSTTHETIMING OFTHE NEEDLE AND THE FEED DOG CORRECT SETTING: WHEN THE TIP OF RIGHT NEEDLE IS AT 2 TO 4 MM ABOVE THE NEEDLE PLATE IN ITS DOWNWARD MOTION, AND PRESSER FOOT LOWERED, THE TOP OF THE FEED DOG TEETH SHOULD BE LEVEL WITH THE TOP SURFACE OF NEEDLE PLATE AT THEIR REARMOST POSITION. BEFORE ADJUSTMENT, CHECK IFTHE NEEDLE BAR HEIGHT AND THE FEED DOG HEIGHT ARE CORRECT. TO ADJUST: 1. SETTHE STITCH LENGTH DIAL AT "3" AND DIFFERENTIAL FEED DIAL AT" 1.0". 2. REMOVE THE BACK COVER UNIT. 3. RAISE THE PRESSER FOOT AND MOVE THE TIP OF RIGHT NEEDLE AT 3 MM ABOVE THE NEEDLE PLATE IN ITS DOWNWARD MOTION BY TURNING THE HANDWHEEL. 4. LOWER THE PRESSER FOOT, AND LOOSE TWO SETSCREWS (A) ON MAIN FEED CAM, TWO SETSCREWS (B) ON SUB FEED CAM, AND ADJUST THE POSITION OFTHE SUB FEED CAM AND TIGHTEN SETSCREWS (B). # TURN THE SUB FEED CAM TO THE DIRECTION (C) IF THE FEED DOG IS LOWER THAN THE SURFACE OFTHE NEEDLE PLATE. # TURNTHE SUB FEED CAM TOTHE DIRECTION (D) IFTHE FEED DOG IS HIGHER THAN THE SURFACE OFTHE NEEDLE PLATE. NOTE: WHEN TURNING THE SUB FEED CAM, PUSH THE SUB FEED CAM TO THE MAIN FEED CAM LIGHTLY. 5. SETTHE MAIN FEED CAM TO KEEP THE CLEARANCE BETWEEN THE BUSHING AND MAIN FEED CAM TO ABOUT 1 MM, AND TIGHTEN TWO SETSCREWS (A). ATTACH THE BACK COVER UNIT. THE TOP SURFACE OF FEED DOG TOHF ENTEOEPDLE PLATE '_ 2 ~ 4 MM _J DIRECTION (C) DIREC_ f!THE END OF FEED MOVEMENT _{ "_ THE BUSHING AND FEED CAM SHOULD BE ABOUT 1 MM SETSCREW (A) BUTSHHEINCGLEARANCE BETWEEN _ MAIN FEED CAM SETSCREW (B) 00. 11 L GO5 L] 2MM